Chris Tremblay, a member of the Passive Acoustics group at NOAA's Northeast Fisheries Science Center, deploys an underwater recording device along the Eastern Seaboard to listen for the mating sounds of Atlantic cod.
Courtesy of Chris Tremblay
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Pacific bluefin tuna for sale for $2.99 per pound at the fish market in San Diego. That shockingly low price does not reflect the deeply threatened state of the bluefin population.
Clare Leschin-Hoar for NPR
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A school of vermilion rockfish. After being depleted decades ago by overfishing, rockfish — a genus of more than 100 tasty species — have made a remarkable comeback.
Donna Schroeder/From 'Probably More Than You Want to Know About the Fishes of the Pacific Coast'/Courtesy Milton Love
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Donna Schroeder/From 'Probably More Than You Want to Know About the Fishes of the Pacific Coast'/Courtesy Milton Love

Fish on ice in Palau Misa Island, Indonesia. Thanks to satellite data, John Amos of SkyTruth can track fishing activity near the Pacific island nation from his office in West Virginia.
Randy Olson/National Geographic/Getty Images
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The IUCN says the Atlantic bluefin tuna is endangered. Its stocks have declined globally between 29 percent and 51 percent over the past 21 to 39 years, according to the conservation group.
Tono Balaguer/iStockphoto
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The Mokelumne Wilderness is located in the Sierra Nevada mountains, east of Sacramento, Calif., and south of Lake Tahoe. Mike Vilhauer spent five days lost in the region after he walked away from his campsite to look for fishing bait.
Sebastian Werner/Flickr
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Nearly everyone fishes for a living on Laos' Don Sadam Island, near the site of the controversial Don Sahang dam. Locals and environmentalists alike are worried about the dam's effects on fish migration.
Michael Sullivan/NPR
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Paul Greenberg says the decline of local fish markets, and the resulting sequestration of seafood to a corner of our supermarkets, has contributed to "the facelessness and comodification of seafood."
J. Scott Applewhite/AP
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Pacific Or Bust: Fingerling Chinook salmon are dumped into a holding pen Tuesday as they are transferred from a truck into the Sacramento River in Rio Vista, Calif. From here, they'll be towed downstream for a bit, then make their own way out to the Pacific Ocean.
Justin Sullivan/Getty Images
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With local cod so scarce, Chef Toby Hill of Lyric Restaurant in Yarmouth Port, Mass., tries out a dogfish salad — served here with garlic aioli on toast — instead. Dogfish is still plentiful in New England waters, but wholesale fisheries say there's not much demand for it in the U.S.
Christine Hochkeppel/Courtesy of Cape Cod Times
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Migrant workers from Myanmar return to a trawler after unloading fish following a fishing trip in the Gulf of Thailand in Samut Sakhon province Tuesday. A new report details "deceptive and coercive" labor practices in the Thai fishing sector, which relies heavily on workers from Cambodia and Myanmar, also known as Burma.
Sakchai Lalit/AP
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Caleb Newton, who lives in Spotsylvania County, Va., holds the 17-pound, 6-ounce northern snakehead fish he caught in June. The International Game Fish Association has approved a world record for his catch of the invasive predator.
Griffin Moores/The Free Lance-Star
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